Goldwood Sound Molded Tweeter or Midrange Lense Heavy Duty Bolt On Abs Directivity Speaker Horn, Black (GM-450PB) 1 Goldwood Sound GM-450PB heavy duty ABS directivity horn, extremely durable molded ABS plastic, standard 2" with 4" diameter circle 4 bolt on driver pattern 90 x 40 degree dispersion for maximum coverage, cutoff frequency is 500Hz, reinforced ribs supports heavy 2" exit compression driver Outer dimensions (h x w x d) are 9.8" x 17.7" x 9.1", cutout (h x w) is 8" x 15.75", drivers not included, designed and engineered in the USA Use for DJ speaker, PA speaker, karaoke speaker, live sound speaker, fixed installation speaker, studio monitor and home audio speaker This listing and price is for 1 Goldwood GM-450PB pro audio horn